Vanilla Cream

Place a saucepan with 1 pint cream or milk over the fire, add 2 tablespoonfuls flour,
the yolks of 4 eggs, 1 tablespoonful butter, 3 tablespoonfuls sugar, 1 teaspoonful vanilla extract and a sprinkle of salt; stir this until it comes to a boil; when cold mix cream with the yolk of 1 egg and a little sweet cream.